SGS Thomson Microelectronics TS487IDT, TS487ID, TS486IST, TS486IDT, TS486ID Datasheet

TS486

TS487

100mW STEREO HEADPHONE AMPLIFIER WITH STANDBY

MODE

■OPERATING FROM Vcc=2V to 5.5V

■STANDBY MODE ACTIVE LOW (TS486) or HIGH (TS487)

■OUTPUT POWER: 102mW @5V, 38mW @3.3V into 16Ω with 0.1% THD+N max (1kHz)

■LOW CURRENT CONSUMPTION: 2.5mA max

■High Signal-to-Noise ratio: 103dB(A) at 5V

■High Crosstalk immunity: 83dB (F=1kHz)

■PSRR: 58 dB (F=1kHz), inputs grounded

■ON/OFF click reduction circuitry

■Unity-Gain Stable

■SHORT CIRCUIT LIMITATION

■Available in SO8, MiniSO8 & DFN 3x3mm

DESCRIPTION

The TS486/7 is a dual audio power amplifier capable of driving, in single-ended mode, either a 16 or a 32Ω stereo headset.

Capable of descending to low voltages, it delivers up to 90mW per channel (into 16Ω loads) of continuous average power with 0.3% THD+N in the audio bandwitdth from a 5V power supply.

An externally-controlled standby mode reduces the supply current to 10nA (typ.). The unity gain stable TS486/7 can be configured by external gain-setting resistors or used in a fixed gain version.

APPLICATIONS

■Headphone Amplifier

■Mobile phone, PDA, computer motherboard

■High end TV, portable audio player

ORDER CODE

	Part	Temperature	Package			Gain	Marking
	Number	Range: I	D	S	Q
	TS486		∙			external	TS486I
	TS487		∙			external	TS487I
	TS486			∙	∙	external	K86A
	TS486-1			tba	tba	x1/0dB	K86B
	TS486-2	-40, +85°C		tba	tba	x2/6dB	K86C
	TS486-4			tba	tba	x4/12dB	K86D
	TS487			∙	∙	external	K87A
	TS487-1			tba	tba	x1/0dB	K87B
	TS487-2			tba	tba	x2/6dB	K87C
	TS487-4			tba	tba	x4/12dB	K87D

PIN CONNECTIONS (top view)

TS486IDT: SO8, TS486IST, TS486-1IST,

TS486-2IST, TS486-4IST: MiniSO8

OUT (1)

1

8

VCC

VIN (1)	2	7	OUT (2)
BYPASS	3	6	VIN (2)
GND	4	5	SHUTDOWN

TS486-IQT, TS486-1IQT, TS486-2IQT, TS486-4IQT:

DFN8

OUT (1)	1	8	Vcc
VIN (1)	2	7	OUT (2)
BYPASS	3	6	VIN (2)
	4	5
GND				SHUTDOWN

TS487IDT: SO8, TS487IST, TS487-1IST,

TS487-2IST, TS487-4IST: MiniSO8

OUT (1)	1	8	VCC
VIN (1)	2	7	OUT (2)
BYPASS	3	6	VIN (2)
GND	4	5	SHUTDOWN

TS487-IQT,

TS487-1IQT, TS487-2IQT, TS487-4IQT: DFN8

OUT (1)	1	8	Vcc
VIN (1)	2	7	OUT (2)
BYPASS	3	6	VIN (2)
GND	4	5	SHUTDOWN

MiniSO & DFN only available in Tape & Reel with T suffix, SO is available in Tube (D) and in Tape & Reel (DT)

June 2003

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TS486-TS487

ABSOLUTE MAXIMUM RATINGS

	Symbol	Parameter	Value	Unit
	VCC	Supply voltage 1)	6	V
	Vi	Input Voltage	-0.3v to VCC +0.3v	V
	Tstg	Storage Temperature	-65 to +150	°C
	Tj	Maximum Junction Temperature	150	°C
	Rthja	Thermal Resistance Junction to Ambient		°C/W
		SO8	175
		MiniSO8	215
		DFN8	70
		Power Dissipation 2)	0.71
	Pd	SO8		W
		MiniSO8	0.58
		DFN8	1.79
	ESD	Human Body Model (pin to pin): TS486, TS4873)	1.5	kV
	ESD	Machine Model - 220pF - 240pF (pin to pin)	100	V
	Latch-up	Latch-up Immunity (All pins)	200	mA
		Lead Temperature (soldering, 10sec)	250	°C
		Output Short-Circuit to Vcc or GND	continous 4)

1.All voltage values are measured with respect to the ground pin.

2.Pd has been calculated with Tamb = 25°C, Tjunction = 150°C.

3.TS487 stands 1.5KV on all pins except standby pin which stands 1KV.

4.Attention must be paid to continous power dissipation (VDD x 300mA). Exposure of the IC to a short circuit for an extended time period is dramatically reducing product life expectancy.

OPERATING CONDITIONS

	Symbol	Parameter	Value	Unit
	VCC	Supply Voltage	2 to 5.5	V
	RL	Load Resistor	³ 16	W
	Toper	Operating Free Air Temperature Range	-40 to + 85	°C
		Load Capacitor
	CL	RL = 16 to 100W	400	pF
		RL > 100W	100
	VSTB	Standby Voltage Input	1.5 £ VSTB £ VCC
		TS486 ACTIVE / TS487 in STANDBY		V
		TS486 in STANDBY / TS487 ACTIVE	GND £ VSTB £ 0.4 1)
		Thermal Resistance Junction to Ambient
	RTHJA	SO8	150	°C/W
		MiniSO8	190
		DFN82)	41

1.The minimum current consumption (ISTANDBY) is guaranteed at GND (TS486) or VCC (TS487) for the whole temperature range.

2.When mounted on a 4-layer PCB.

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TS486-TS487

FIXED GAIN VERSION SPECIFIC ELECTRICAL CHARACTERISTICS

VCC from +5V to +2V, GND = 0V, Tamb = 25°C (unless otherwise specified)

Symbol	Parameter	Min.	Typ.	Max.	Unit
RIN 1,2	Input Resistance 1)		20		kΩ
	Gain value for Gain TS486/TS487-1		0dB
G	Gain value for Gain TS486/TS487-2		6dB		dB
	Gain value for Gain TS486/TS487-4		12dB

1.See figure 30 to establish the value of Cin vs. -3dB cut off frequency.

APPLICATION COMPONENTS INFORMATION

	Components	Functional Description
	RIN1,2	Inverting input resistor which sets the closed loop gain in conjunction with RFEED. This resistor also
		forms a high pass filter with CIN (fc = 1 / (2 x Pi x RIN x CIN)) . Not needed in fixed gain versions.
	CIN1,2	Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminal.
	RFEED1,2	Feedback resistor which sets the closed loop gain in conjunction with RIN.
		AV= Closed Loop Gain= -RFEED/RIN. Not needed in fixed gain versions.
	CS	Supply Bypass capacitor which provides power supply filtering.
	CB	Bypass capacitor which provides half supply filtering.
	COUT1,2	Output coupling capacitor which blocks the DC voltage at the load input terminal.
		This capacitor also forms a high pass filter with RL (fc = 1 / (2 x Pi x RL x COUT)).

TYPICAL APPLICATION SCHEMATICS

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TS486-TS487

ELECTRICAL CHARACTERISTICS

VCC = +5V, GND = 0V, Tamb = 25°C (unless otherwise specified)

Symbol	Parameter	Min.	Typ.	Max.	Unit
ICC	Supply Current				mA
	No input signal, no load		1.8	2.5
	Standby Current
ISTANDBY	No input signal, VSTANDBY=GND for TS486, RL=32Ω		10	1000	nA
	No input signal, VSTANDBY=Vcc for TS487, RL=32Ω
VIO	Input Offset Voltage (VICM = VCC/2)		1		mV
IIB	Input Bias Current (VICM = VCC/2) 1)		90	200	nA
	Output Power
	THD+N = 0.1% Max, F = 1kHz, RL = 32Ω		64
PO	THD+N = 1% Max, F = 1kHz, RL = 32Ω	60	65		mW
	THD+N = 0.1% Max, F = 1kHz, RL = 16Ω	95	102
	THD+N = 1% Max, F = 1kHz, RL = 16Ω		108
	Total Harmonic Distortion + Noise (Av=-1)
THD + N	RL = 32Ω, Pout = 60mW, 20Hz ≤ F ≤ 20kHz		0.3		%
	RL = 16Ω, Pout = 90mW, 20Hz ≤ F ≤ 20kHz		0.3
PSRR	Power Supply Rejection Ratio, inputs grounded 2)	53	58		dB
	(Av=-1), RL>=16Ω, CB=1μF, F = 1kHz, Vripple = 200mVpp
IO	Max Output Current	106	115		mA
	THD +N ≤ 1%, RL = 16Ω connected between out and VCC/2
	Output Swing
	VOL : RL = 32Ω		0.45	0.5
VO	VOH : RL = 32Ω	4.45	4.52		V
	VOL : RL = 16Ω		0.6	0.7
	Ω	4.2	4.35
	VOH : RL = 16
SNR	Signal-to-Noise Ratio (A weighted, A =-1) 2)	80	103		dB
	v
	(RL = 32Ω, THD +N < 0.4%, 20Hz ≤ F ≤ 20kHz)
	Channel Separation, RL = 32Ω, Av=-1
	F = 1kHz		83
Crosstalk	F = 20Hz to 20kHz		79		dB
	Channel Separation, RL = 16Ω, Av=-1
			80
	F = 1kHz
	F = 20Hz to 20kHz		72
CI	Input Capacitance		1		pF
GBP	Gain Bandwidth Product (RL = 32Ω)		1.1		MHz
SR	Slew Rate, Unity Gain Inverting (RL = 16Ω)		0.4		V/µs

1.Only for external gain version.

2.Guaranteed by design and evaluation.

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TS486-TS487

ELECTRICAL CHARACTERISTICS

VCC = +3.3V, GND = 0V, Tamb = 25°C (unless otherwise specified) 1)

Symbol		Parameter	Min.	Typ.	Max.	Unit
ICC	Supply Current					mA
	No input signal, no load			1.8	2.5
	Standby Current
ISTANDBY	No input signal, VSTANDBY=GND for TS486, RL=32Ω			10	1000	nA
	No input signal, VSTANDBY=Vcc for TS487, RL=32Ω
VIO	Input Offset Voltage (VICM = VCC/2)			1		mV
IIB	Input Bias Current (V	= V /2) 2)		90	200	nA
	ICM	CC
	Output Power
	THD+N = 0.1% Max, F = 1kHz, RL = 32Ω			26
PO	THD+N = 1% Max, F = 1kHz, RL = 32Ω		23	28		mW
	THD+N = 0.1% Max, F = 1kHz, RL = 16Ω			38
	THD+N = 1% Max, F = 1kHz, RL = 16Ω		36	42
	Total Harmonic Distortion + Noise (Av=-1)
THD + N	RL = 32Ω, Pout = 16mW, 20Hz ≤ F ≤ 20kHz			0.3		%
	RL = 16Ω, Pout = 35mW, 20Hz ≤ F ≤ 20kHz			0.3
PSRR	Power Supply Rejection Ratio, inputs grounded 3)		53	58		dB
	(Av=-1), RL>=16Ω, CB=1μF, F = 1kHz, Vripple = 200mVpp
IO	Max Output Current		64	75		mA
	THD +N ≤ 1%, RL = 16Ω connected between out and VCC/2
	Output Swing
	VOL : RL = 32Ω			0.3	0.38
VO	VOH : RL = 32Ω		2.85	3		V
	VOL : RL = 16Ω			0.45	0.52
	Ω		2.68	2.85
	VOH : RL = 16
SNR	Signal-to-Noise Ratio (A weighted, A =-1) 3)		80	98		dB
		v
	(RL = 32Ω, THD +N < 0.4%, 20Hz ≤ F ≤ 20kHz)
	Channel Separation, RL = 32Ω, Av=-1
	F = 1kHz			80
Crosstalk	F = 20Hz to 20kHz			76		dB
	Channel Separation, RL = 16Ω, Av=-1
				77
	F = 1kHz
	F = 20Hz to 20kHz			69
CI	Input Capacitance			1		pF
GBP	Gain Bandwidth Product (RL = 32Ω)			1.1		MHz
SR	Slew Rate, Unity Gain Inverting (RL = 16Ω)			0.4		V/µs

1.All electrical values are guaranted with correlation measurements at 2V and 5V.

2.Only for external gain version.

3.Guaranteed by design and evaluation.

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TS486-TS487

ELECTRICAL CHARACTERISTICS

VCC = +2.5V, GND = 0V, Tamb = 25°C (unless otherwise specified) 1)

Symbol	Parameter	Min.	Typ.	Max.	Unit
ICC	Supply Current				mA
	No input signal, no load		1.7	2.5
	Standby Current
ISTANDBY	No input signal, VSTANDBY=GND for TS486, RL=32Ω		10	1000	nA
	No input signal, VSTANDBY=Vcc for TS487, RL=32Ω
VIO	Input Offset Voltage (VICM = VCC/2)		1		mV
IIB	Input Bias Current (VICM = VCC/2) 2)		90	200	nA
	Output Power
	THD+N = 0.1% Max, F = 1kHz, RL = 32Ω		13
PO	THD+N = 1% Max, F = 1kHz, RL = 32Ω	12.5	14		mW
	THD+N = 0.1% Max, F = 1kHz, RL = 16Ω		21
	THD+N = 1% Max, F = 1kHz, RL = 16Ω	17.5	22
	Total Harmonic Distortion + Noise (Av=-1)
THD + N	RL = 32Ω, Pout = 10mW, 20Hz ≤ F ≤ 20kHz		0.3		%
	RL = 16Ω, Pout = 16mW, 20Hz ≤ F ≤ 20kHz		0.3
PSRR	Power Supply Rejection Ratio, inputs grounded 3)	53	58		dB
	(Av=-1), RL>=16Ω, CB=1μF, F = 1kHz, Vripple = 200mVpp
IO	Max Output Current	45	56		mA
	THD +N ≤ 1%, RL = 16Ω connected between out and VCC/2
	Output Swing
	VOL : RL = 32Ω		0.25	0.32
VO	VOH : RL = 32Ω	2.14	2.25		V
	VOL : RL = 16Ω		0.35	0.45
	Ω	1.97	2.15
	VOH : RL = 16
SNR	Signal-to-Noise Ratio (A weighted, A =-1) 3)	80	95		dB
	v
	(RL = 32Ω, THD +N < 0.4%, 20Hz ≤ F ≤ 20kHz)
	Channel Separation, RL = 32Ω, Av=-1
	F = 1kHz		80
Crosstalk	F = 20Hz to 20kHz		76		dB
	Channel Separation, RL = 16Ω, Av=-1
			77
	F = 1kHz
	F = 20Hz to 20kHz		69
CI	Input Capacitance		1		pF
GBP	Gain Bandwidth Product (RL = 32Ω)		1.1		MHz
SR	Slew Rate, Unity Gain Inverting (RL = 16Ω)		0.4		V/µs

1.All electrical values are guaranted with correlation measurements at 2V and 5V.

2.Only for external gain version.

3.Guaranteed by design and evaluation.

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TS486-TS487

ELECTRICAL CHARACTERISTICS

VCC = +2V, GND = 0V, Tamb = 25°C (unless otherwise specified)

Symbol		Parameter	Min.	Typ.	Max.	Unit
ICC	Supply Current					mA
	No input signal, no load			1.7	2.5
	Standby Current
ISTANDBY	No input signal, VSTANDBY=GND for TS486, RL=32Ω			10	1000	nA
	No input signal, VSTANDBY=Vcc for TS487, RL=32Ω
VIO	Input Offset Voltage (VICM = VCC/2)			1		mV
IIB	Input Bias Current (V	= V /2) 1)		90	200	nA
	ICM	CC
	Output Power
	THD+N = 0.1% Max, F = 1kHz, RL = 32Ω			8
PO	THD+N = 1% Max, F = 1kHz, RL = 32Ω		7	9		mW
	THD+N = 0.3% Max, F = 1kHz, RL = 16Ω			12
	THD+N = 1% Max, F = 1kHz, RL = 16Ω		9.5	13
	Total Harmonic Distortion + Noise (Av=-1)
THD + N	RL = 32Ω, Pout = 6.5mW, 20Hz ≤ F ≤ 20kHz			0.3		%
	RL = 16Ω, Pout = 8mW, 20Hz ≤ F ≤ 20kHz			0.3
PSRR	Power Supply Rejection Ratio, inputs grounded 2)		52	57		dB
	(Av=-1), RL>=16Ω, CB=1μF, F = 1kHz, Vripple = 200mVpp
IO	Max Output Current		33	41		mA
	THD +N ≤ 1%, RL = 16Ω connected between out and VCC/2
	Output Swing
	VOL : RL = 32Ω			0.24	0.29
VO	VOH : RL = 32Ω		1.67	1.73		V
	VOL : RL = 16Ω			0.33	0.41
	Ω		1.53	1.63
	VOH : RL = 16
SNR	Signal-to-Noise Ratio (A weighted, A =-1) 2)		80	93		dB
		v
	(RL = 32Ω, THD +N < 0.4%, 20Hz ≤ F ≤ 20kHz)
	Channel Separation, RL = 32Ω, Av=-1
	F = 1kHz			80
Crosstalk	F = 20Hz to 20kHz			76		dB
	Channel Separation, RL = 16Ω, Av=-1
				77
	F = 1kHz
	F = 20Hz to 20kHz			69
CI	Input Capacitance			1		pF
GBP	Gain Bandwidth Product (RL = 32Ω)			1.1		MHz
SR	Slew Rate, Unity Gain Inverting (RL = 16Ω)			0.4		V/µs

1.Only for external gain version.

2.Guaranteed by design and evaluation.

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TS486-TS487

Index of Graphs

Description	Figure	Page
Common Curves
Open Loop Gain and Phase vs Frequency	1 to 10	9 to 10
Current Consumption vs Power Supply Voltage	11	10
Current Consumption vs Standby Voltage	12 to 17	10 to 11
Output Power vs Power Supply Voltage	18 to19	11 to 12
Output Power vs Load Resistor	20 to 23	12
Power Dissipation vs Output Power	24 to 27	12 to 13
Power Derating vs Ambiant Temperature	28	13
Output Voltage Swing vs Supply Voltage	29	13
Low Frequency Cut Off vs Input Capacitor for fixed gain versions	30	13
Curves With 0dB Gain Setting (Av=-1)
THD + N vs Output Power	31 to 39	14 to 15
THD + N vs Frequency	40 to 42	15
Crosstalk vs Frequency	43 to 48	16
Signal to Noise Ratio vs Power Supply Voltage	49 to 50	17
PSRR vs Frequency	51 to 56	17 to 18
Curves With 6dB Gain Setting (Av=-2)
THD + N vs Output Power	57 to 65	19 to 20
THD + N vs Frequency	66 to 68	20
Crosstalk vs Frequency	69 to 72	21
Signal to Noise Ratio vs Power Supply Voltage	73 to 74	21
PSRR vs Frequency	75 to 79	22
Curves With 12dB Gain Setting (Av=-4)
THD + N vs Output Power	80 to 88	22 to 24
THD + N vs Frequency	89 to 91	24
Crosstalk vs Frequency	92 to 95	24
Signal to Noise Ratio vs Power Supply Voltage	96 to 97	25
PSRR vs Frequency	98 to 102	26

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TS486-TS487

Fig. 1: Open Loop Gain and Phase vs

Fig. 2: Open Loop Gain and Phase vs

Frequency									Frequency
							180								180
	80				Vcc = 5V		160			80			Vcc = 5V		160
		Gain			ZL = 16Ω						Gain		ZL	Ω
					Tamb = 25°C									= 16 +400pF
	60						140			60			Tamb = 25°C		140
							120								120
Gain (dB)	40						100	Phase (Deg)	Gain (dB)	40					100	Phase (Deg)
	Phase						80			Phase					80
	20									20
							60								60
	0						40			0					40
	-20						20			-20					20
							0								0
	-40						-20			-40					-20
	0.1	1	10	100	1000	10000				0.1	1	10	100	1000	10000
			Frequency (kHz)									Frequency (kHz)

Fig. 3: Open Loop Gain and Phase vs

Fig. 4: Open Loop Gain and Phase vs

Frequency									Frequency
							180								180
	80				Vcc = 2V		160			80			Vcc = 2V		160
		Gain			ZL = 16Ω						Gain		ZL
														= 16Ω+400pF
	60				Tamb = 25°C		140			60			Tamb = 25°C		140
							120								120
Gain (dB)	40						100	Phase (Deg)	Gain (dB)	40					100	Phase (Deg)
	Phase						80			Phase					80
	20									20
							60								60
	0						40			0					40
	-20						20			-20					20
							0								0
	-40						-20			-40					-20
	0.1	1	10	100	1000	10000				0.1	1	10	100	1000	10000
			Frequency (kHz)									Frequency (kHz)

Fig. 5: Open Loop Gain and Phase vs

Fig. 6: Open Loop Gain and Phase vs

Frequency									Frequency
							180									180
	80				Vcc = 5V		160			80			Vcc = 5V			160
					ZL = 32Ω								ZL	= 32Ω+400pF
			Gain									Gain
					Tamb = 25°C		140						Tamb = 25°C			140
	60									60
							120									120
(dB)Gain	40						100	(Deg)Phase	(dB)Gain	40						100	(Deg)Phase
	Phase						80			Phase						80
	20									20
							60									60
	0						40			0						40
	-20						20			-20						20
							0									0
	-40						-20			-40						-20
	0.1	1	10	100	1000	10000				0.1	1	10	100	1000	10000
			Frequency (kHz)									Frequency (kHz)
																	9/31

TS486-TS487

Fig. 7: Open Loop Gain and Phase vs

Fig. 8: Open Loop Gain and Phase vs

Frequency									Frequency
							180									180
	80				Vcc = 2V		160			80			Vcc = 2V			160
					ZL = 32Ω								ZL	= 32Ω+400pF
			Gain									Gain
					Tamb = 25°C		140						Tamb = 25°C			140
	60									60
							120									120
(dB)Gain	40						100	(Deg)Phase	(dB)Gain	40						100	(Deg)Phase
	Phase						80			Phase						80
	20									20
							60									60
	0						40			0						40
	-20						20			-20						20
							0									0
	-40						-20			-40						-20
	0.1	1	10	100	1000	10000				0.1	1	10	100	1000	10000
			Frequency (kHz)									Frequency (kHz)

Fig. 9: Open Loop Gain and Phase vs

Fig. 10: Open Loop Gain and Phase vs

Frequency									Frequency
							180									180
	80	Gain			Vcc = 5V		160			80		Gain		Vcc = 2V		160
					RL = 600Ω									RL = 600Ω
	60				Tamb = 25°C		140			60				Tamb = 25°C		140
							120									120
Gain (dB)	40						100	Phase (Deg)	Gain (dB)	40						100	Phase (Deg)
	20	Phase					80			20	Phase					80
							60									60
	0						40			0						40
	-20						20			-20						20
							0									0
	-40						-20			-40						-20
	0.1	1	10	100	1000	10000				0.1	1	10	100	1000	10000
			Frequency (kHz)									Frequency (kHz)

Fig. 11: Current Consumption vs Power Supply

Fig. 12: Current Consumption vs Standby

Voltage

2.0

(mA)	1.5
Consumption	1.0
Current	0.5
	0.0

						Voltage
	No load						2.0
	Ta=85°C					(mA)
							1.5
						Consumption					Ta=85°C
			Ta=25°C	Ta=-40°C					Ta=25°C
							1.0
						Current			Ta=-40°C
							0.5					TS486
												Vcc = 5V
							0.0					No load
0	1	2	3	4	5		0	1	2	3	4	5
		Power Supply Voltage (V)							Standby Voltage (V)

10/31